diff --git a/babel.config.js b/babel.config.js
index b9ca74946c..d39a695139 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -32,6 +32,8 @@ const PLUGINS = [
         // We explicitly transpile this ESM library in scripts/fix-dependencies.js and consume the transpiled version here
         // This may not be needed once switch to Jest is complete as it is handled by transformIgnorePatterns
         '@mapbox/tiny-sdf': `${nodeModules}/@mapbox/tiny-sdf/index.cjs`,
+        // fix ERR_REQUIRE_ESM in yarn cover
+        'maplibregl-mapbox-request-transformer': `${nodeModules}/maplibregl-mapbox-request-transformer/src/index.cjs`,
         // compile from @kepler.gl src
         ...RESOLVE_ALIASES,
         // loaders.gl cjs bundle of polyfills is not transpiled properly, use esm instead
diff --git a/scripts/fix-dependencies.sh b/scripts/fix-dependencies.sh
index d4eaff945f..2d59eb0b48 100755
--- a/scripts/fix-dependencies.sh
+++ b/scripts/fix-dependencies.sh
@@ -13,3 +13,6 @@ yarn babel node_modules/@mapbox/tiny-sdf/index.js | tail -n +2 > node_modules/@m
 if [[ -f "node_modules/react-virtualized/dist/es/WindowScroller/utils/onScroll.js" ]]; then
   sed -i -e '/import { bpfrpt_proptype_WindowScroller } from "..\/WindowScroller.js";/d' node_modules/react-virtualized/dist/es/WindowScroller/utils/onScroll.js
 fi
+
+# fix ERR_REQUIRE_ESM in yarn cover
+yarn babel node_modules/maplibregl-mapbox-request-transformer/src/index.js | tail -n +2 > node_modules/maplibregl-mapbox-request-transformer/src/index.cjs
\ No newline at end of file